Calibration of Early Cretaceous dinoflagellate zones from the NWS of Australia to the global time scale through calcareous nannofossils

G. Gard, John Backhouse, J. Crux

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    Abstract

    © 2016 Elsevier Ltd. Palynomorphs and nannofossils were examined from the Lower Cretaceous interval of the well North Scarborough-1, drilled on the Exmouth Plateau, North West Shelf of Australia. Integration of the chronostratigraphic information from both fossil groups revealed discrepancies in the age information with the nannofossils suggesting a younger age than dinoflagellate cysts. The nannofossil events have a stronger tie to the global time scale than the dinoflagellate zones which are mainly local. The direct comparison of nannofossil and dinoflagellate events in the same section allows for improved stratigraphic precision and a revised correlation of Australian dinoflagellate zonal ages to the global time scale, GTS12. Global nannofossil ages confirm a Barremian-late Hauterivian age for the Muderongia australis Zone, but the Systematophora areolata to Dissimulidinium lobispinosum Zones appear to be 1-2 my younger than previously estimated.
    Original languageEnglish
    Pages (from-to)180-187
    JournalCretaceous Research
    Volume61
    DOIs
    Publication statusPublished - 2016

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    nanofossil
    dinoflagellate
    Cretaceous
    calibration
    timescale
    Hauterivian
    dinoflagellate cyst
    Barremian
    plateau
    fossil
    young

    Cite this

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    title = "Calibration of Early Cretaceous dinoflagellate zones from the NWS of Australia to the global time scale through calcareous nannofossils",
    abstract = "{\circledC} 2016 Elsevier Ltd. Palynomorphs and nannofossils were examined from the Lower Cretaceous interval of the well North Scarborough-1, drilled on the Exmouth Plateau, North West Shelf of Australia. Integration of the chronostratigraphic information from both fossil groups revealed discrepancies in the age information with the nannofossils suggesting a younger age than dinoflagellate cysts. The nannofossil events have a stronger tie to the global time scale than the dinoflagellate zones which are mainly local. The direct comparison of nannofossil and dinoflagellate events in the same section allows for improved stratigraphic precision and a revised correlation of Australian dinoflagellate zonal ages to the global time scale, GTS12. Global nannofossil ages confirm a Barremian-late Hauterivian age for the Muderongia australis Zone, but the Systematophora areolata to Dissimulidinium lobispinosum Zones appear to be 1-2 my younger than previously estimated.",
    author = "G. Gard and John Backhouse and J. Crux",
    year = "2016",
    doi = "10.1016/j.cretres.2016.01.001",
    language = "English",
    volume = "61",
    pages = "180--187",
    journal = "Cretaceous Research",
    issn = "0195-6671",
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    TY - JOUR

    T1 - Calibration of Early Cretaceous dinoflagellate zones from the NWS of Australia to the global time scale through calcareous nannofossils

    AU - Gard, G.

    AU - Backhouse, John

    AU - Crux, J.

    PY - 2016

    Y1 - 2016

    N2 - © 2016 Elsevier Ltd. Palynomorphs and nannofossils were examined from the Lower Cretaceous interval of the well North Scarborough-1, drilled on the Exmouth Plateau, North West Shelf of Australia. Integration of the chronostratigraphic information from both fossil groups revealed discrepancies in the age information with the nannofossils suggesting a younger age than dinoflagellate cysts. The nannofossil events have a stronger tie to the global time scale than the dinoflagellate zones which are mainly local. The direct comparison of nannofossil and dinoflagellate events in the same section allows for improved stratigraphic precision and a revised correlation of Australian dinoflagellate zonal ages to the global time scale, GTS12. Global nannofossil ages confirm a Barremian-late Hauterivian age for the Muderongia australis Zone, but the Systematophora areolata to Dissimulidinium lobispinosum Zones appear to be 1-2 my younger than previously estimated.

    AB - © 2016 Elsevier Ltd. Palynomorphs and nannofossils were examined from the Lower Cretaceous interval of the well North Scarborough-1, drilled on the Exmouth Plateau, North West Shelf of Australia. Integration of the chronostratigraphic information from both fossil groups revealed discrepancies in the age information with the nannofossils suggesting a younger age than dinoflagellate cysts. The nannofossil events have a stronger tie to the global time scale than the dinoflagellate zones which are mainly local. The direct comparison of nannofossil and dinoflagellate events in the same section allows for improved stratigraphic precision and a revised correlation of Australian dinoflagellate zonal ages to the global time scale, GTS12. Global nannofossil ages confirm a Barremian-late Hauterivian age for the Muderongia australis Zone, but the Systematophora areolata to Dissimulidinium lobispinosum Zones appear to be 1-2 my younger than previously estimated.

    U2 - 10.1016/j.cretres.2016.01.001

    DO - 10.1016/j.cretres.2016.01.001

    M3 - Article

    VL - 61

    SP - 180

    EP - 187

    JO - Cretaceous Research

    JF - Cretaceous Research

    SN - 0195-6671

    ER -